Detachable puddle blade



L. W. JONES.

DETACHABLE PUDDLE BLADE.

APPLICATION FILED 11111.24, 1.921.

Patented Mar. 7, 1922.

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UNITED STATES PATENT OFFICE.

LOUIS W. JONES,v 013' Los ANGELES, CALIFORNIA.

DETACHABLE PUDDLE BLADE.

Application filed. March 24, 1921.-

To all whom 2'25 may concern:

Be it known that I, LOUIS citizen of the United States,

ngeles, in the county of Los Angeles and State of California, haveinvented new and useful Improvements in Detachable Puddle Blades, ofwhich the following is a specification.

My invention relates generally to metal melting pots, and moreparticularly, to a detachable puddling blade that is arranged foroperation in the lower portion of the melting pot and which, inoperation, is instrumental in effecting a very thorough mixing of themolten metal.

The subject-matter of my present invention is an improvement upon themelting pot disclosed in my co-pending application, filed December 6,1920, Serial N 0. 428,731.

The principal objects of my invention are, to generally improve upon andsimplify the construction of certain parts of the melting pot disclosedin J ONES, a residing at Los pot of excessive expansive pressure, and,further, toprovide a melting pot with a puddling blade and carrier thatmay be easily and quickly removed for the purpose of adjustment orrepairs.

With the foregoing and other objects in consists in certain novel partsthat will be hereinafter, more fully clescribed and claimed andillustrated in the accompanying drawings, in which F ig'. 1 is avertical section taken centrally through an ordinary form of melting potand showing the same equipped with my improved puddling or mixing blade.

Fig. 2 is a vertical section taken through the center of the puddlingblade carrier, with the blade in position on the lower portion thereofand with a part of said blade in vertical section.

Specificationof Letters Patent.

' the bottom of the melting Patented Mar. 7, 1922. Serial No. 455,215.

Fig. 3 is an enlarged cross section taken on the line 3-3 of Fig. 2.eferring by numerals to the accompanying-s drawlngs, which illustrate apractical GIlllJOCllIIlGIlt of my invention, 10 designates thecylindrical wall of a furnace, 11 the melting pot that is supported inany suitable manner in the upper portion of the furnace chamber, 12 theremovable cap or top piece pot and furnace, and 13 the spout metal isdischarged, and said spout being provided with a suitable dischargecontrol valve 14-.

Journaled in a bearing 15 that is arranged in the upper portion of cap12, is the upper end of a vertically disposed shaft 16, and fixedthereon, beneath said bearing 15, is a beveled pinion 17. This pinionmeshes with a corresponding beveled pinion 18 that is carried by theinner end of a horizontally disposed shaft 19, the same Detachablyconnected to the lower end of shaft 16, is a vertically disposed tubularmember 21' that extends downwardly through the center of the pot 11 andthe lower end of said tubular member being provided. with a plug or pin22 that normally occupies a bearing 23 that is formed in pot.

of tubular member 21 from shaft 16.

The puddling or mixing blade contemplated by my invention is formed of asingle piece of metal, the central portion of which is substantiallyrectan ular in cross ber 21. of the blade are cut away, so as to provideinclined faces such as 25, the same extending entirely across the uppersurfaces of the arms, and, by virtue of such construction, each arm ofthe blade is substantially triangular in cross section, with an inclinedor beveled upper face.

Formed through and leading from the medial line on the inclined. orbeveled face downwardly and rearwardly points adjacent to its rear edge,are inclined apertures such as 26.

In the operation of my improved melting pot, hand wheel 20 ismanipulated to rotate shaft 19, and the rotary motion thereof istransmitted through beveled pinions 1S and 17, to vertically disposedshaft 16 and the puddler blade carrying member 21, and, as said bladetraverses a horizontal path in the lower portion of the pot, the armsofsaid blade to the sides of the centrally arranged tubular member 21,will pass through the metal in the lower portion of said pot, therebydividing said metal so that a part of it is caused to travel upwardlyover the inclined or beveled top surfaces 25, and portions of the moltenmetal will pass downwardly and rearwardly through the inclined openings26, with the result that a very thorough agitation and mixture of themetal is effected.

It will be understood, that the ordinary type metal, or metal having acertain proportion of antimony, expands as it cools and becomeshardened, and in order to relieve the walls of the pot 11 from pressuredue to this expansion, I form the carrier for the puddling or stirringblade in the form of a tube and make the wall thereof relatively thin,so that said carrier will absorb the greater portion of the pressure dueto the expansion of the type metal while cooling, and thus relieving thewalls of the pot from strains and internal pressure which might resultin breakage of said pot.

A puddling blade of my improved construction is comparatively simple,can be easily and cheaply produced, is effective in very thoroughlymixing the molten metal in which it is immersed, and said blade ismounted so that it can be easily and quickly removed from the pot forthe purposes of adjustment or repair.

It will be readily understood that minor changes in the size, form andconstruction of the various parts of my improved puddling lade may bemade and substituted for those herein shown and described withoutdeparting from the spirit of my invention, the scope of which is setforth in the appended claims.

I claim as my invention:

1. A puddling blade for melting pots the arms of the blade' to theunderface of the arm, at

formed in a single piece comprising a pair of oppositely disposed arms,the upper surfaces of which are inclined, and there being openingsformed through said arms and extending downwardly and rearwardly fromsaid inclined upper surfaces.

2. The combination with a' type metal melting pot, of a tubular shaftarranged for operation within said pot, the wall of which shaft isrelatively thin, and a puddling blade carried by the lower portion ofsaid tubular shaft, said blade being provided with an inclined topsurface and there being inclined openings formed through said blade andleading downwardly and rearwardly from said inclined top surface.

3. The combination with a type metal melting pot, of a tubular shaftarranged for operation within said pot, a puddling blade carried by thelower portion of said tubular shaft, and means for rotating said tubularshaft, said blade beingsubstantiallytriangular in cross section, therebeing downwardly and rearwardly inclined openings formed through saidblade. I

f. The combination with a type metal melting pot, of a shaft arrangedfor rotation in the upper portion of said pot, a tubular shaftdetachably connected to said rotatably mounted shaft and extendingdownwardly through the pot, the wall of which tubular shaft isrelatively thin, a bearing for the lower end of said tubular shaft, anda puddling blade carried by the lower portion of said tubular shaft,said blade having an'inclined top surface and there being openingsformed through said blade and leading downwardly and rearwardly from theinclined top surface thereof.

5. The combination with a type metal melting pot, of a rotatably mountedshaft in the upper portion of said pot, a tubular shaft, the wall ofwhich is relatively thin, a puddling blade carried by the lower portionof said tubular shaft, and a, bearing for the lower portion of saidtubular shaft, which bearing permitssaidshaftto be moved bodily downwardwhen the'upper portion thereof is disconnected from the rotatablymounted shaft,said blade being substantially triangular in cross sectionwith an inclined up- 7 per surface, there being openings formed throughsaid blade and leading downwardly tftnd rearwardly from said inclinedtop surace.

In testimony whereof I have signed my name to this specification.

. LOUIS W. JONES.

